Vacuum cleaning apparatus.



T. WIEDEMANN & J. H. TEMPLIN.

VACUUM CLEANING APPARATUS.

APPLIGATION FILED JULY 31, 1909. 9 5,7 3, Patented July 26, 1910.

3 SHEETS-SHEET 1.

T. WIEDEMANN & J. H. TEMPLI N. VACUUM CLEANING APPARATUS. APPLQIUATION- FILED JULY 31, 1909.

965 ,783. Patented July 26, 1910.

' s SHEETS-SHEET 2.

T. WIEDEMANNKE J. H. TEMPLIN. VACUUM CLEANING APPARATUS. APPLICATION IILED JULY 31, 1909.

965,783. v Patented July 26,1910.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

THEODORE WIEDEMANN AND JOSEPH H. TEMPLIN, OF PHILADELPHIA, PENNSYL VANIA, ASSIGNOBS TO'KELLER MANUFACTURING COMPANY, A CORPORATION OF DELAWARE.

. YAGUUM cremains APPARATUS.

To all whom e't may concern:

Be it known that we, THEODORE WIEDE MANN and Josn'rn H, TEMPLIN, citizens of the United States, residing in the city and county of Philadelphia, State of- Pennsylvania, have invented a new and useful Vacuum Cleaning Apparatus, of which the following is a specification.

- this character that suitable pumping or suc- This invention relates to vacuum cleaning apparatus adapted to modern requirements for removing dust, dirt and foreign matter geneally from carpets, upholstery fabrics and the like by currents of air and relates more particularly to the valve mechanisms controlling the delivery of air to the apparatus. It is well known in apparatus of tion and discharge apparatus'is used in con-' nection with a motor for carrying a dustwhether the device is carryin laden current of air into asuitable dust receptacle or separating apparatus which is located adjacent'thereto and whichis conveniently accessible for the purposes of removal, inspection'or repairs, and In order to etlectually control the motor and the operating parts of the mechanism the pumping chamber and its valves serve a most important function in the operation thereof.

In use the apparatus is frequently actuated and some times for a considerable period without the suction devices in contact with upholstery or the like-for the removal of dust, dirt, etc. at which time if no means are provided for regulating the mo- -tor it is liable to raise or develop an excessive high speed tending to overheat the parts and damage the operating mechanism.

To this end we have devised a novel valvestructure and pumping chamber wherein the speed of the motor is accurately governed a loadof dust-laden air into the separating chamber or not, and wherein the pulsations areunimore it is a desideratum in an apparatus of suction creating device Withoutloss of energy and provision is further. made for' enabling any part-of the suction or discharge apparatus valves or equivalent devices to be readily accessible at all times for Specification of Letters latent. Patented J uly 26, 1910, I Application filed July 31, 1909. Serial No. 510,559.

the purpose of inspection, repairs and renewal. j

. To the above ends our invention consists of a novel constructlon of dust separating device, pumping and actuating mechanism valve mechanism operating in conjunction therewith, vacuum pumpin and pressure chambers all arranged as wi 1 be more fully set forth. I

For the purpose of illustrating our invention we" have shown in the accompanying drawin s one formthereof which is atpresent pre erred by us, since the same has been found in practice to give satisfactory and reliable results although it 'is to be understood that the various instrumentalities of which our invention consists can be variously arranged and organized and thatour invention is not limited to the precise arrangement and organization of these instrument-alities as herein H shown and described. r z

Referring to the: drawings :Figure' 1 represents a verticalsection of a vacuum cleaning apparatus embodying our invention. Fig. 2 represents'a section substantially on line- 'm .r,' Fig. T1, showing the pumping mechanism and one side of the represents a section on line g/y, Fig. 1'.-

Fig. v6 represents'a section on line 'e'e, Fig. 5. Fig.7 represents, on a reduced scale,

corresponding parts in the figures. 1

1 designates our novel construction of partly broken away, a section ,on line e 2, form, accurate-and dependable. Further-' Fig imilarv numerals, of reference indicate vacuum cleaning apparatus, the same comprising the base portion 2,'the latter having the outwardly projecting orflaring flange 3 and the upwardly extending flange 4, upon the top of which latter rests the ring 5, thelatter having the downwardly projecting i .portionhfi, and .the' npwardly projecting fast to the shell or casing 9 member 7, which latter'is provided with the V shoulder 8 upon which rests the outer wall 1 or casing 9, which latter in the present in.-

stance is preferably round or cylindrical, al though it will ,be apparent that the exterior shape or contour of the apparatus may be changed or varied according to require ments.

1O designates a'r'ing secured to the upper portion of the casing 9, said ringbeing provided'with the slotted lugs 11, having the bolts 12 pivoted therein, the upper ends of said bolts being threaded and provided with l the thumb nuts 13, it being understood that the rings 5 and 10 are in practice secured so as to be removed in unison therewith. g

14 designates slotted. lugs or ears secured in the present instance to the lower portion of the base or bed member 2, said lugs or ears being, arranged preferably diametrically opposite to each other and having pivoted therein the bolts 15, whose upper ends are threaded with thumb nuts 16, said bolts'bein adapted to pass through the slotted ears 1 which are preferably located on the ring 5 so that by manipulating the thumb nuts. .16 the bolts 15 can be readily engaged with or disengaged from the lugs 17, it being a parent that by the employment of the astening devices referred to at the upper and lower portions of the apparatus, the lower portion of the casing can be readily: disconnected from its, base, according to requirements, while the upper portion of the casing can be readily disconnected from-the top; or cover 18, as is evident, the latterbeing provided with the. angular brackets 19 which terminate inv the slotted ears20, which are adapted for the reception. of the bolts 12, as will be understood from Fig. 1.

21 designates a. handle which has its eX--.

tremities preferably securedt'o the upwardly extending members of the brackets- 19, as

a will be understoodfrom Fig. 1, said handle being preferably of suificient length so that when it isdesiredito transport the apparatus from one apartment or room to another, the handle can readily grasped by two people if necessary,

In order that the upper compartment which we term .the vacuum chamber or'reservoir 22 may be'made air and dust tight, we place in the under. side of the cover 18 a groove 23, in which isloeated an annular ring, packing or gasket 24, the latter being adapted to rest upon the top ofthe flan e 25 of the inner dust bag 26, the under si e of said flange restin upon the annular ring,- packing or gasket 2?, which, is mounted in a recess 1n the upper portion of the ring-'10,.

whereupon it will be seen that when the thumbnuts 13 aretightened, the, flangec25 will be tightly held: between said packing;

extending flange 45, said scares rings 24 and 27, the manner of assembling the top 18 on the flange 25 ofthe inner dust bag and the top of the casing 9 being apparent from. Fig. 1. in the preferred form of constructing and assembling the inner dust bag, the lower portion. or bod 26 thereof is constructed of some suitable fa ric having the sides 28, as indicated and the bottom portion 29, the upper extremity of said sides 28-being secured to the annular portion 30 by meansof the wires or other fastening devices 31; p

- 32, designates a bowl or depression formed in the cover 18 and with which a passage 33, leading from the inlet 34, communicates. and thereby conducts the dust laden current of air from a suitable hose connected to the opening 34, tothe inner bag or separating device 26, it being understood that a suitable opening 35 is formedin the bottom of the bowl to permit the passage of the dust and the like. I

36 designates a plate of transparent material, which is'seated in the recess 37 of the -depression.32 and is held in position by the ring or fastening device 38, as will be apparent fromFig. 1. laden air after passing-through the outlet 35 intov the bag 26, whose construction and manner of removal has already been described, passes thence through the outer bag 39, which is composed of sides and the bottom portion 40, the upper sides of said outer bag 39 being connected to. or rein:

forced by the ring41', as will be understood.

43 designates a perforated plate, preferably of somewhat less diameter than the eas- The current of dust ing 9, said plate being mounted above orsupported on the wings 43, the latter being contained within or resting. upon the pan formed by the plate 44 and the upwardly plate 44 resting upon the ring or packing 4 c 47 designates an opening in the plate 44 which discharges into the ring 46 and thence through the opening 48 into what we term the pumpingapparatus proper 49, it being noted that the latter is located between the vacuum reservoir 22 and what we term the pressure chamber 50, in the lower 'portion of the casing 9. The pumping apparatus 49 comprises a top plate 51 which terminates I belts or fastening devices '57, which serve to 1 hold the ,fianges 52 and 53 in juxtaposition, also hold? the outer periphery ofthe diaphragm 5,6 in proper position. As will be.

' ports or openings 58-therethrough, which are arranged in staggered order with respect to the ports or openings 59 of the plate or diaphragm 60, which islocated above said diaphragm-56, as'will be understood from Figs. 3 to 6 and is held in position with, respect thereto by means of the bolts or fastening devices 61 and the inner or central fastening device 62, as will be best understood from Figs. 3 and 4. a

63 desigriates arms which are secured to the. ring or frame 64, the latter being secured to the diaphragm .60.and 56 by means of the fastening devices 61, before. described, said arms 63 being secured to the head 65 of the connecting rods 66, which latter terminate in the eccentric strap 67 it being noted that said eccentricstrap and connecting rod usual construction.

. apparent from Fig. 1, although it is evident and head are preferablyfjointless or made integral or in one piece."

68 designates an eccentric, by means of which the eccentric strap and connecting rod are actuated, suitable ball bearings 69 being located between said strap and eccentric, the latter being rotated by-the shaft 70, which is actuated by the motor 71. In the present instance we preferably employ an electric motor, since the same is capable of being readily coupled to electric .lightfixtures of It will be understood that we employ two eccentric straps, connecting rods and their adjuncts, as will be that a single eccentric strap and connecting rod might be employed if ,desired. It will also be seen that we have a direct connection from each-eccentric to the diaphragm 56.

Turning now to Figs.- 1 to 4 inclusive,-it

will be seen thatbetween the plate or mem-' ber 51 and the diaphragm 56, a somewhat enlarged pumping.chamber 72 is formed,

.such chamber extending nearly across the casing of the apparatus, the lowerv portion of said chamber being bounded by the upper diaphragms"? 3 and 74, whose outer peripheries are held in position by means of the ring or frame 75 having the fastening devices 7 6 passing therethrough, the center I portion of said diaphragms being held in sition by means of the fastening device 7 the lower diaphragm 73 being provided with the ports or perforations 78, which are arranged in' staggered order with respect to the ports or perforations 7 9 of the A upper diaphragm, as will be clearly apparent.

It will be understood that areas of the passages 47 and 4:8 and the staggeredports 79 andf78, the chamber 72 and the staggered ports 59 and 58 and thearea of the pressure chamber 50 are so proportioned and correlated with respect to'each other and particularly. the area of the chamber 72 substantially uniform quantity of air forced into the pressure chamber-50 and discharged from the outlet port 80, seen in Fig. 2, as will be hereinafter explained, so that the speed of the motor will be at all times substantially uniform, no matter whether-the suction hose or the like is placed, against the carpet, upholstery or other fabric to be cleaned, or whether it is withdrawntherefrom and the motor is simply running free, so "that the pumping apparatus is simply sucking in air at atmospheric pressure.

properly proportioned flow of air to or from the pumping chamber, the parts may be accurately assembled, the adjustments are simple, and the movements have a fixed relation to each other, while displacement of any of the valve structures and. their ad-- juncts is practically a remote occurrence.-

' The operation is as follows :-The parts are first placed in operative condition apcurrent can then be admitted to themotor. In Figs. 1 and 2 the diaphragm 56 and its adjuncts are seen in the 'lowest' positions they may assume and upon the rotation'of must be of such proper relative dimensions and proportions that there will alwaysbe a pearing assembled as seeninj Fig; 1, and the the eccentrics 68 it will be evident that the parts will rapidly in succession assume'the appearance seen in Figs. 3 and 4, it beingapparent' that as the connecting rods 66 I move upwardly they will raise the dia Iphragm 56 into the position seen in Fig.3,

whereupon the air in the chamber 72 will be compressed and will cause the diaphragms 73 and 74: and 56 to assumethe positions seen in Fig.3, whereupon the air will pass in the direction of the arrows seen in'said Fig. 3 downwardly into the pressure chamber 50 and thence through'the openi1'1g80, seen in Fig. 2, to the atmosphere. It will be apparent that in our novel construction, the ,chamber 72 is designed so that there is a considerable clearance area whereby the maximum vacuum will be automatically limited in a similar manner to that already described and claimed in our application filed May 3, 1909, Serial'No..493,724; -A

further rotation of the eccentric 68 will whereupon the diaphragms 56 and 60 will assume the positions seen in Fig. 4 and dia-' cause the descent of the connecting rods 66,

phragm 73 will also assume the position seen in said Fig. 4, whereupon the air will be drawn in through the staggered ports 79 that as the diaphragm 56 moves from the position seen Fig. 3 tothe position seen in ig. 4, the parts assume the position seen in said Fig. 4: by reason of the accumulation of pressure in the pressure chamber 50, as

will be apparent to those skilled in the art.

In practice, motors of the character employed incur construction run at a very rapid rate or approximately fifteen hundred to two thousand revolutions per minute, so that it can be seen that the rapid reciprocations of the diaphragm 56 will, when the chambers 72 and 50 are properly ,proportioned with respect to each other, cause a sufiicient body of air to be at alltimes contained or compressed in said chambers, so that the motor will not race, but will run at all times at. substantially a uniform speed irrespective of whether the suction nozzle 32 is in or out of contact with the carpet, up-' hoist-cry or other fabric to be cleaned We have found in practice that the most satisfactory results are obtained from the employment of a motor actuating two cranks or eccentrics, each having a connecting rod connected atone end to or actuated by one eccentric, while the opposite end of each of said connecting rods is rigidly secured to an arm orhead, as 65, attached to the die phragm 56, the latter being secured in its outer periphery to, a suitable fixed point and said diaphragm serving to actuate or co-act in conjunction with suitable vacuum creating devices.

v To obtain access to the interior for the purpose of removing, cleaning or changing theinner dust bag 26, it is only necessary to loosen the nuts 13, after which the bolts 12 can be turned downwardly and-the top 18 removed, whereupon the inner bag 26 can be removed and cleaned, and then replaced, all

in a few moments time. The object inemploying two dust bags is to insure a thorough filtering of the air before it reaches the pumping chamber, the outer dust bag 39 not requiring to be removed as frequently as v the inner one, as is evident. When it is de sired to have access to the lower portion of the apparatus, itis only necessary to loosen the nuts 16, whereupon the casing 9 and ms adjuncts can be readily and quickly removed from the base 2,"and the motor 71," diaphragm 56 and its adjuncts are readily accessible.

In' a contemporaneously pending application, Serial No. 501,098, we have shown and described a vacuum cleaning apparatus; wherein we have claimed-a machine similar to that shown in this case, considered with reference to the general features of the combinationffof elements having especial refer-' ence to the relative arrangement of vacuum chamber, pressure; chamber, motor and.

pumping mechanism, while in the present case the claims are directed particularly toplate 44: being readily removed from the our novel feature of valve mechanism, em bodying among other things, diaphragms having ports therein, and stud pumping mechanism being provided with a flexible diaphragm, forming part of the wall of said pressure and pumping chambers. lVe have also claimed herein a device wherein the motor andpump are preferably secured to each other and detachable from the inclosing casing, whereby said motor and pump may be bodily removed from the outer casing as a unit." So far as we are aware, we are the first to employ the above mentioned devices and to the structural features claimed in our co pending applicationaforesaid, we

herein make no claim. 7

In practice we prefer ,to provide the easing 9 with side handles and rollers or casters, so as to enable the'apparatus to be readily removed from one room or apartment to another. I

The principal-function of the 'apertured plate 43 is to form a support for the outer dust bag, said plate, the wings 45 and the,

ring 46. i

It will be apparent that various changes maybe made by those skilled in the art in the manner of assembling. the casing, the dust separating devices, the valvular devices and their adjuncts without departing from the spirit of our invention and we do not thereforedesire to be limited in every instance to the exact construction herein shown and described.

of openings, a diaphragm having a plurality of openingstherein mounted in said inlet:

opening, meansto control the opening and closing of both said openings, of pumping mechanism cooperating with said pumping chamber, a motor located within said casing,

and driving connections between said motor and said pumping mechanism.

2. In a vacuum pump, the combination wrth a casing containlng a vacuum reservoir provlded wlthan inlet port, a pressure res,-

--ervoir provided with an outlet port, a pumping chamber between the said reservoirs and provided with an inlet opening, a flexible diaphragm forming one side of said pumping chamber and provided with a plurality of openings, 9. second diaphragm secured thereto and having openings therein in staggered relation. to said flexible diaphragm y 100 Having thus described our inventiomwhat I said pumping chamber, a motor located within said casing, and driving connections between said motor and said pumping mechanism.

3. In a vacuum pump, the combination with a casing containing a vacuum reservoir provided with an inlet port, a pressure reservoir provided with an outlet port, a pumping chamber between the said reservoirs and provided with an inlet opening, a flexible diaphragm forming one side of said pumping chamber and provided with a plurality of openings, a perforated diaphragm secured to said flexible diaphragm, the perforations and openings of said diaphragms being arranged in staggered relation, a p1urality of diaphragms in said inlet opening and having openings therein in relative staggered relation, of pumping mechanism cooperating with said pumping chamber, a motor located within said casing, and driving connections between said motor and said pumping mechanism.

4. In a vacuum pump, the combination with a casing containing a vacuum reservoir provided with an inlet port, a pressure reservoir provided with an outlet port, a

pumping chamber between the said reser-. voirs and provided with an inlet opening, a plurality of superimposed diaphragms located in said inlet opening, each provided with a plurality of openings relatively staggered, a ring securing said diaphragms to said pumping chamber, a fastening device securing said diaphragms together, a second set of diaphragms controlling the outlet from said pumping chamber, each of said diaphragms having a plurality of open ings therein arranged in relatively staggered relation, of pumping mechanism cooperating with said pumping chamber, a motor located within said casing, and driving connections between said motor and said pumping mechanism. v

5. In a vacuum pump, a pulsation chamber comprising a casing, a flexible member secured at its outer edges within said casing and provided with a plurality of openings, a substantially rigid diaphragm secured to. said flexible member and having a plurality of openings therein in staggered relation to said first mentioned openings, and means to reciprocate said flexible member.

6. In a vacuum pump, a pulsation chamber comprising a casing, a flexible member secured at its outer periphery within said diaphragm, means to reciprocate said flexi-- ble member, the opposite portion of said pulsation chamber having an inlet therein, and valve mechanism controlling said inlet.

7. In a vacuum pump, a pulsation chamber comprising a casing, a flexible member carried by said casing and closing one side thereof and provided with a plurality of openings, a' substantially rigid diaphragm secured to said flexible member and having a plurality of openings therein in staggered relation to said first mentioned openings, means for preventing the relative movement of the central portion of said flexible member and diaphragm, means to reciprocate said flexible member, the oppo-' site side of said casing being provided with an inlet opening, a substantially rigid apertured diaphragm covering said opening, an

apertured flexible member having its outer periphery fixedly supported in proximity to the last named diaphragm, the apertures in said last named diaphragm and last named flexible member being arranged in.

relatively staggered relation, and devices for preventing the relative -movement of the central portion of said last-named apertured flexible member and said last named diaphragm.

8. In a vacuum pump, the combination of an inclosing casing containin a vacuum reservoir provided with an inlet port, a pressure reservoir provided with an outlet port, a pump casing between the said reservoirs and provided with a pumping chamber having an inlet opening, a flexible diaphragm forming one side of said pumping chamber and provided with a discharge opening, means for controlling the opening" and closing of the pumping chamber inlet and the outlet carried by the flexible diaphragm, a pumping mechanism co6perating with said pumping chamber, a; motor located within said casing, driving connections between said motor and said pumping mechanism, and said motor and pump casing being secured to each other and detachable from the inclosing casing, whereby the motor and pump casing maybe bodily removed from the inclosingcaslng as a unit.

THEODORE WIEDEMANN. JOSEPH H. TEMPLIN. Witnesses:

E.-HAYWARD FAIRBANKS, J. C. MCGLASHEN. 

